I want to change some of the linux files, how to recompile the linux and reinstall it

Question

I want to make changes to the kernel files /linux/net/ipv4/ip_output.c in my case. I want to add a script to be run that changes the payload of the data whenever a packet passes through the IP_LOCAL_OUTPUT hook. Now when I add that script, how do I recompile the kernel that make the changes operable.

Answer 1

Ubuntu and Debian have thier own way to rebuild kernel. Methods from other distros DO NOT apply. Here is the right procedure, follow the apt-src way.